Sanyo PLC-EF31, Service Manual

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11. Pedestal level adjustments AV
Equipment Oscilloscope.
Input mode AV
Input signal 16 step gray scale signal
Set the image to "Service mode."
Adjust the pedestal level and black level in same level with the and - but-
tons.
However, the amplitude-A in a figure must not shrink.
Group No. Connection
210- 5
TP2526 (Green pedestal level adjustment)
210- 6
TP2536 (Red pedestal level adjustment)
210- 7
TP2516 (Blue pedestal level adjustment)
12. Contrast adjustments-AV
Equipment Oscilloscope.
Input mode AV.
Input signal 16 step gray scale signal
Set the image to "Service mode."
Adjust each test point value part-A in a figure minimum amplitude with the Volume
+ and - buttons.
Group No. Connection
210- 8
TP2526 (Green contrast adjustment)
210- 9
TP2536 (Red contrast adjustment)
210- 10
TP2516 (Blue contrast adjustment)
A
Black Level
Pedestal
Level
Black Level
Pedestal
Level
A
13. Panel driving signal adjustments -AV
Equipment Oscilloscope.
Input mode AV.
Input signal 16 step gray scale signal
Picture condition Normal.
Set the image to "Service mode."
Adjust each item for below values with the and - buttons.
Group No. Connection Adjustment part.
Adjustment or adjustment value.
210- 11 TP2526(Green)
Amplitude-A in a figure.
4.0 ± 0.05Vp-p
210- 12 TP2526(Green)
Amplitude-B in a figure.
1.6 ± 0.05Vp-p
210- 13 TP2536(Red)
Amplitude-A in a figure.
4.0 ± 0.05Vp-p
210- 14 TP2536(Red)
Amplitude-B in a figure.
1.6 ± 0.05Vp-p
210- 15 TP2516(Blue)
Amplitude-A in a figure.
4.0 ± 0.05Vp-p
210- 16 TP2516(Blue)
Amplitude-B in a figure.
1.6 ± 0.05Vp-p
14. Panel driving signal adjustments -PC
Equipment Oscilloscope.
Input mode Computer
Input signal 16 step gray scale signal
Set the image to "Service mode."
Adjust each item for below values with the and - buttons.
Group No. Connection Adjustment part.
Adjustment or adjustment value.
200- 11 TP2526(Green)
Amplitude-A in a figure.
4.0 ± 0.05Vp-p
200- 12 TP2526(Green)
Amplitude-B in a figure.
1.5 ± 0.05Vp-p
200- 13 TP2536(Red)
Amplitude-A in a figure.
4.0 ± 0.05Vp-p
200- 14 TP2536(Red)
Amplitude-B in a figure.
1.5 ± 0.05Vp-p
200- 15 TP2516(Blue)
Amplitude-A in a figure.
4.0 ± 0.05Vp-p
200- 16 TP2516(Blue)
Amplitude-B in a figure.
1.5 ± 0.05Vp-p
A
B
A
B